MilesDependent, I think you are not alone, sadly.
I, too, had more than a few very negative experiences (not at YUL but at YVR and YYZ).
I wonder if Canada is going to do some tourism promotion for Toronto after the Sars thing. Remove those immgiration and customs officials, and I will go even if Sars is there!
Pity, I like YVR a lot but I just can't stand those immgiration officers and reduced trips there.
I think one of the CX forum regulars, Commuter, wrote to YVR airport about the immigration nightmare and got some feedback. I couldn't find that thread.